Home / 419,906,971.60-629,860,457.40-113,230,085.20

Finding the Fourth Proportional to 419,906,971.60, 629,860,457.40 and 113,230,085.20

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Solution

The fourth proportional to 419,906,971.60, 629,860,457.40 and 113,230,085.20 is: 169,845,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,906,971.60 : 629,860,457.40 = 113,230,085.20 : x
  2. Step 2: Convert to fraction form
    419,906,971.60/629,860,457.40 = 113,230,085.20/x
  3. Step 3: Cross multiply
    419,906,971.60x = 629,860,457.40 × 113,230,085.20
  4. Step 4: Simplify right side
    419,906,971.60x = 71,319,153,255,512,968
  5. Step 5: Solve for x
    x = 71,319,153,255,512,968/419,906,971.60
  6. Step 6: Final answer
    x = 169,845,127.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.